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Entropy is:
- It is denoted by S.
- It is a state function and ΔS is independent of path.
- Entropy is a measure of the degree of randomness or disorder in a system.
- Greater the disorder of a system, the higher is the entropy. The decrease of regularity in structure means increase in entropy.
- Crystalline solid is the state of lowest entropy (most ordered) and the gaseous state is a state of highest entropy.
- As the temperature increases, randomness increases, and thus, entropy increases.
- For a reversible reaction, entropy change (ΔS)
- (for a reversible reaction)
- At equilibrium, ΔS = 0
- Entropy of a spontaneous reaction increases till it reaches the maximum, and at equilibrium, ΔS = 0
- Entropy is a state property. Therefore, entropy change for a reversible process is given byFor reversible and irreversible isothermal expansion of an ideal gas (that is under isothermal conditions), ΔU = 0. But is not zero for the irreversible process.
Main definition are stated according to http://wiki.answers.com/Q/FAQ/8454.Thermodynamics is the study of energy conversion between heat and mechanical work which leads to the macroscopic properties such as temperature, volume, and...
What else can I help you with?
Why does heat energy flow from warm areas to cooler areas?
Nature always tries to come to an state of equilibrium. Water flows from a higher to a lower level. Electricity flows from a higher potential to a lower potential. Thus heat is transferred from a warmer to a colder area until an equilibrium is reached.
How many gallons of air are in 80 cubic feet?
1 US gallon = 0.133680556 cubic foot (google) (80 gallon)*(0.133680556 cubic foot/gallon) = 10.69444448 cubic feet The current pressure is meaningless as to the volume of the tank. If you have the temperatrue and pressure of the tank, you can determine the mass and hence density of the air inside the tank, and also determine how many cubic feet of air you have if you were to release the pressure into another fixed volume. The temperature is a tricky one though. If you pump the tank up, the air inside the compressor is hotter than ambient. This is due to the compressor adding internal energy and the conservation of energy principles. The air has a quantity of energy to it, capturing a large volume and reducing the volume (compressing) puts all that energy into a smaller container. More energy per mass means hotter gas. The gas will eventually cool to ambient, and lower the tank pressure slightly. Point being, when you release the gas at a cooled stage, the air re-expands and drops temperature due to the conservation of energy (the inverse of before). In essence this is how AC works. The conversion of energy and all that good stuff like entrophy makes it a challenge, so here'e what I think your asking, in a nut shell. If you released all the air into a giant balloon or something, the general equation, and I mean very very general, P1V1 = P2V2 V2 = P1V1/P2 P1 = 175 PSIG + 14.1 PSI = 189.1 PSIA P2 = 14.1 PSIA V1 = 10.69444 ft^3 V2 = 189.1/14.1*10.69444 = 143.426 ft^3143.426/.133680556 = 1072.903 gallons of Air in its released state at standandard pressure. Again, this is assuming an adiabatic isentrophic process. It is only a vague estimation. Chris Morrison Aero Student OSU
Where do you get a trophy class dragonfable?
The Entrophy class is avaliable from Cysero's Store of Savings for 1800 DC.
Where do you get en trophy class dragonfable?
Entrophy Class (Permanent) is available from Cysero's Store Of Savings for 1800 DC
What has the author Jacques Yvon written?
Jacques Yvon has written: 'Correlations and entropy in classical statistical mechanics' -- subject(s): Entrophy, Statistical mechanics
Is Entrophy change in a system that undergoes a spontaneous process positive negative or zero?
Negative entropy is a process or chemical reaction proceeds spontaneously in the forward direction.Positive entropy is a process proceeds spontaneously in reverse.
What is the Meaning of Entrophy?
Entropy is a measure of the disorder or randomness in a system. In thermodynamics, it is a state function that quantifies the amount of energy in a system that is unavailable to do work. As entropy increases, the amount of useful energy available decreases, leading to a more disordered state in the system.
What does the entrophy of a reaction describe?
The entropy of a reaction describes the degree of disorder or randomness in a system as reactants are transformed into products. It quantifies the number of possible microstates or configurations that can occur in a given reaction, with higher entropy indicating greater disorder. In thermodynamics, a positive change in entropy during a reaction often favors spontaneity, as systems tend to evolve toward states of higher entropy.
Pollution caused by automobiles is an example of?
An increase in entrophy
What types of reactions would decrease the entrophy within a cell?
CO(g)+3H2(g)->CH4(g)+H2O(g)
What would cause entrophy to decrease in a reaction?
Entropy can decrease in a reaction when a system transitions from a more disordered state to a more ordered state, often observed in processes like crystallization or the formation of complex molecules from simpler ones. This decrease typically occurs in a local context, as the overall entropy of the universe still tends to increase according to the second law of thermodynamics. Additionally, external energy input can drive reactions that lead to a decrease in entropy within a system. However, it’s important to remember that while entropy may decrease locally, the total entropy of the combined system and surroundings will increase.
How does the 10 percent rule relate to the term entrophy?
The 10 percent rule, often associated with energy transfer in ecosystems, suggests that only about 10 percent of the energy from one trophic level is passed on to the next, while the rest is lost as heat, contributing to entropy. Entropy, in thermodynamic terms, refers to the measure of disorder or randomness in a system, and as energy is dissipated, the overall entropy of the ecosystem increases. This interplay illustrates how energy transformations lead to increased disorder, underscoring the inefficiencies of energy transfer within ecological systems. Thus, the 10 percent rule highlights the inevitable increase in entropy as energy flows through trophic levels.
Why does heat energy flow from warm areas to cooler areas?
Nature always tries to come to an state of equilibrium. Water flows from a higher to a lower level. Electricity flows from a higher potential to a lower potential. Thus heat is transferred from a warmer to a colder area until an equilibrium is reached.
State the First and Second Laws of Thermodynamics and explain why they are important in understanding your ability to extract and use energy resources?
The first law states that neither matter nor energy can be created or destroyed The second law states that everything tends toward disorder ie. falls apart, fades, withers, erodes, etc. I like the versions: 1st: You can't get something for nothing 2nd: Not only that, you can't even break even
